505045234510423 has 4 divisors (see below), whose sum is σ = 505045399171480. Its totient is φ = 505045069849368.

The previous prime is 505045234510343. The next prime is 505045234510441. The reversal of 505045234510423 is 324015432540505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505045234510423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505045234510423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505045234516423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77640708 + ... + 83893801.

It is an arithmetic number, because the mean of its divisors is an integer number (126261349792870).

Almost surely, 2^{505045234510423} is an apocalyptic number.

505045234510423 is a deficient number, since it is larger than the sum of its proper divisors (164661057).

505045234510423 is a wasteful number, since it uses less digits than its factorization.

505045234510423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164661056.

The product of its (nonzero) digits is 1440000, while the sum is 43.

The spelling of 505045234510423 in words is "five hundred five trillion, forty-five billion, two hundred thirty-four million, five hundred ten thousand, four hundred twenty-three".